Drug Class: Analgesic and Antipyretic — Intravenous Formulation | Form: Intravenous Infusion Solution (100ml vial/bag) | Prescription Status: Prescription Only (Rx) — Hospital Use — DRAP Registered
What is Nuberol-P Injection 1g/100ml? Nuberol-P Injection contains Paracetamol 10mg/ml — the intravenous formulation of one of the world's most widely used analgesics and antipyretics, specifically designed for clinical settings where oral or rectal administration is not feasible. Each 100ml infusion bag delivers 1g of Paracetamol directly into the bloodstream — achieving therapeutic blood concentrations within 15 minutes and providing faster and more predictable pain and fever relief than oral Paracetamol which requires gastrointestinal absorption. It is administered exclusively by trained healthcare professionals in hospital settings for post-operative pain management, acute fever in hospitalised patients, and situations where the oral route is temporarily unavailable. The same strict 4g maximum daily Paracetamol limit applies regardless of route of administration — all Paracetamol sources must be carefully tracked to prevent potentially fatal hepatotoxicity.
What is Nuberol-P Injection Used For?
- Post-operative pain — short-term moderate pain management following surgical procedures (آپریشن کے بعد درد کا علاج)
- Acute fever in hospitalised patients — rapid fever control when oral medicines cannot be given (اسپتال میں بخار کا فوری علاج)
- Moderate pain in patients unable to take oral medicines — post-procedure, nausea, dysphagia
- Multimodal analgesia — combined with NSAIDs or opioids for enhanced post-operative pain control
- Trauma and emergency pain — acute pain management in emergency department settings
- Pain management in critically ill patients — ICU patients where oral route is unavailable
How Does it Work? Paracetamol acts primarily within the central nervous system — inhibiting prostaglandin synthesis in the brain and spinal cord through central COX inhibition and activating descending serotonergic pain-inhibitory pathways that reduce overall pain signal intensity reaching conscious awareness. For fever, Paracetamol blocks prostaglandin production in the hypothalamus — resetting the elevated temperature set-point back to normal. The intravenous route bypasses gastrointestinal absorption entirely — achieving peak plasma concentrations within 15 minutes of infusion completion compared to 30 to 60 minutes with oral tablets. This faster onset makes IV Paracetamol particularly valuable in immediate post-operative pain management and acute fever requiring rapid pharmacological control in clinical settings.
Dosage and Administration
⚠️ Administered by trained healthcare professionals only — never self-administer. Total daily Paracetamol from ALL routes and ALL sources must never exceed 4g (4000mg) — including oral tablets, syrups, or combination products. Minimum 4 to 6 hours between doses. Dose reduction required in patients with liver disease, chronic alcohol use, malnutrition, or low body weight below 50kg. Infuse over exactly 15 minutes.
| Patient | Dose | Frequency | Maximum Daily Dose |
|---|---|---|---|
| Adults and children over 50kg | 1g (100ml) | Every 4 to 6 hours | 4g (4000mg) per day |
| Adults and children under 50kg | 15mg/kg | Every 4 to 6 hours | 60mg/kg per day — not exceeding 3g |
| Severe liver or kidney impairment | 1g (100ml) | Every 6 hours minimum | 3g per day maximum |
| Elderly patients | 1g (100ml) | Every 6 hours | 3g per day — with caution |
Active Ingredients
| Ingredient | Concentration |
|---|---|
| Paracetamol | 10mg/ml (1g per 100ml) |
Who Should NOT Receive Nuberol-P Injection?
- Allergy to Paracetamol or any excipient in the infusion solution
- Severe active liver disease or acute hepatic failure — Paracetamol hepatotoxicity risk critically elevated
- Severe active hepatitis
- Paracetamol overdose or suspected overdose from any source
- Patients already receiving maximum daily Paracetamol dose from other sources
- Rare hereditary conditions — glucose-6-phosphate dehydrogenase deficiency or fructose intolerance
- Patients with severe malnutrition — depleted glutathione reserves increase hepatotoxicity risk significantly
Side Effects
Common at therapeutic doses: IV Paracetamol is extremely well tolerated at correct therapeutic doses. Mild injection site reactions — redness or discomfort at infusion site, mild nausea — generally very rare and transient.
Serious — Report to treating team immediately: Liver damage — the most critical risk almost exclusively associated with overdose or exceeding 4g daily; elevated liver enzymes, jaundice, severe upper right abdominal pain, nausea and vomiting (یرقان اور پیٹ میں درد — فوری ڈاکٹر کو بتائیں), severe allergic reaction — sudden widespread rash, swelling of face or throat, difficulty breathing, hypotension during infusion (فوری انفیوژن بند کریں — فوری مدد لیں), significant hypotension during rapid infusion — always infuse over exactly 15 minutes never faster, thrombocytopaenia — unusual bruising or bleeding with prolonged high-dose use, haemolytic anaemia in G6PD-deficient patients.
Drug Interactions
| Medicine | Interaction |
|---|---|
| Other Paracetamol-containing products — oral tablets, syrups, combination analgesics, cold medicines | Most critical interaction — combining with any other Paracetamol source risks exceeding 4g daily limit causing potentially fatal liver damage; always account for ALL Paracetamol sources |
| Warfarin | Paracetamol at regular doses increases anticoagulant effect — INR monitoring essential during IV course |
| Antiepileptics (Carbamazepine, Phenytoin, Phenobarbitone) | Induce liver enzymes increasing formation of toxic Paracetamol metabolites — hepatotoxicity risk at lower doses in these patients |
| Alcohol (شراب) | Severely increases hepatotoxicity risk by depleting glutathione and inducing toxic metabolite formation — dangerous combination |
| Isoniazid (TB medicine) | Increases toxic Paracetamol metabolite production — increased liver damage risk |
| Probenecid | Reduces Paracetamol clearance — increases blood levels; reduce Paracetamol dose when combined |
| Cholestyramine | Reduces Paracetamol absorption — less relevant for IV route but relevant if switching to oral |
| Metoclopramide | Increases rate of Paracetamol absorption — relevant when switching to oral formulation |
Storage: Store below 25°C in a cool, dry place. Protect from light. Do not refrigerate or freeze. Store in original packaging until use. Single use only — discard any unused portion of infusion immediately after use. Keep out of reach of unauthorised personnel. Do not use after expiry date. Inspect visually before use — do not use if solution is discoloured, cloudy, or contains visible particles.
FAQs
Q: Why is IV Paracetamol preferred over oral Paracetamol in post-operative patients? Immediately after surgery patients are typically fasted, nauseated, or have restricted oral intake — making oral administration impractical. IV Paracetamol achieves therapeutic concentrations within 15 minutes of infusion, provides more predictable blood levels than oral absorption, and delivers effective multimodal analgesia as part of opioid-sparing pain management strategies that reduce opioid requirements and their associated side effects in surgical patients.
Q: Is the 4g daily maximum Paracetamol limit still applicable when using IV Paracetamol in hospital? Absolutely — the 4g maximum daily limit applies strictly regardless of the route of administration. Hospital prescribers must account for all Paracetamol sources simultaneously — IV infusions, oral tablets, suppositories, and hidden Paracetamol in combination analgesics or cold medicines. Exceeding this limit through any combination of routes causes potentially fatal liver damage that may not become clinically apparent until 3 to 4 days after the overdose event.
Q: Can Nuberol-P IV Infusion be given faster than 15 minutes to achieve quicker pain relief? No — the infusion must always run over exactly 15 minutes regardless of urgency. Faster infusion causes significant hypotension and cardiovascular instability. The 15-minute infusion already achieves peak concentrations and maximum analgesia more rapidly than oral Paracetamol — no clinical benefit is gained from faster administration while cardiovascular risks increase substantially.
Medical Disclaimer: This information is for general awareness only and does not replace professional medical advice. This medicine must only be prescribed and administered by qualified healthcare professionals in appropriate clinical settings.